Home / 112,760.47-155,607.69-61,772.77

Finding the Fourth Proportional to 112,760.47, 155,607.69 and 61,772.77

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Solution

The fourth proportional to 112,760.47, 155,607.69 and 61,772.77 is: 85,245.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,760.47 : 155,607.69 = 61,772.77 : x
  2. Step 2: Convert to fraction form
    112,760.47/155,607.69 = 61,772.77/x
  3. Step 3: Cross multiply
    112,760.47x = 155,607.69 × 61,772.77
  4. Step 4: Simplify right side
    112,760.47x = 9,612,318,044.60
  5. Step 5: Solve for x
    x = 9,612,318,044.60/112,760.47
  6. Step 6: Final answer
    x = 85,245.46

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.